Add breakdown comment in 4-random.js

Author: moses77-boop

Sprint-2/1-key-exercises/4-random.js

@@ -9,4 +9,5 @@ const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 // Try logging the value of num and running the program several times to build an idea of what the program is doing
 
 //Solution
-//- "num" represents a random whole number between 1 and 100.
+//- "num" represents a random whole number between 1 and 100.
+//Break down of expression